SMAD4 mRNA (SMAD4)

SMAD4 mRNA refers to the messenger RNA transcript encoding the SMAD family member 4 protein. The SMAD4 protein acts as a central mediator ("co-Smad") within the canonical transforming growth factor beta (TGF-beta) signaling pathway. Upon TGF-beta receptor activation, receptor-regulated Smads (R-Smads) are phosphorylated and form complexes with SMAD4 that translocate into the nucleus to regulate gene transcription. This process controls key cellular functions such as proliferation, differentiation, apoptosis, fibrosis regulation, metabolic homeostasis, inflammation modulation, and tumor suppression. Mutations or altered expression of SMAD4 are implicated in various diseases—most notably juvenile polyposis syndrome (loss-of-function), Myhre syndrome (gain-of-function), multiple cancers where it acts as a tumor suppressor gene (especially pancreatic ductal adenocarcinoma), congenital heart defects, restrictive cardiomyopathy, systemic hypertension, fibrosis-related disorders—and have been proposed as biomarkers for patient stratification or monitoring disease progression in oncology and cardiometabolic settings. Note: "SMAD4 mRNA biomarker" is not itself a therapeutic target but rather refers to using SMAD4 mRNA levels as a biomarker for diagnosis/prognosis; the actual molecular target would be "SMAD family member 4" or simply "SMAD4".

Other names

Mothers against decapentaplegic homolog 4DPC4 (Deleted in Pancreatic Carcinoma, locus 4)MADH4Co-Smad